Comparison of the electrochemical performance of carbon produced from sepiolite with different surface characteristics.

Journal Article · Tue Apr 01 04:00:00 EST 2003 · J. New Mater. Electrochem. Syst.

OSTI ID:949648

Sandi, G; Joachin, H; Lu, W; Prakash, J; Tassara, G

A pure carbon-based material with applications in electrochemical processes was synthesized using different fractions of sepiolite clay. The produced carbon was initially characterized to determine its purity and surface properties including surface area, pore volume, and pore diameter. The extent of the purity was assessed from thermogravimetric analysis (TGA). The electrochemical properties, i.e. the potential use as electrode in Li ion batteries, were evaluated using conventional electrochemical testings such as charge/discharge and impedance spectroscopy. The results indicated that there is a correlation of the reversible specific capacity obtained and the surface properties of the template sepiolite. It is shown that their electrochemical performances for anode Li cells are related to their surface chemical properties rather than their BET surface area.

• Research Organization: Argonne National Laboratory (ANL)
• Sponsoring Organization: SC
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 949648
• Report Number(s): ANL/CHM/JA-42804
• Journal Information: J. New Mater. Electrochem. Syst., Journal Name: J. New Mater. Electrochem. Syst. Journal Issue: 2 ; Apr. 2003 Vol. 6; ISSN 1480-2422
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

36 MATERIALS SCIENCE
ANODES
CAPACITY
CARBON
CHEMICAL PROPERTIES
ELECTRODES
IMPEDANCE
PERFORMANCE
SEPIOLITE
SPECTROSCOPY
SURFACE AREA
SURFACE PROPERTIES
THERMAL GRAVIMETRIC ANALYSIS